New Binder Pattern

binder.go

// We would make a seaprate {service}/data package. The reason to separate out the data module is to utilize
// private methods to not expose lower-level resources

// We would no longer need the big global Databinder and instead replace it with a smaller Binder for each resource
// The benifit of switching off of the interface is we can then leverage private attributes like the clients

// The Binders can expose sqlx components like tx in private functions
// The binder methods would be raw management of the resources with no side-effects (i.e. creating a guest
// would not create a guest token)
type GuestBinder struct {
	Get      func() error
	Update   func() error
	Insert   func() error
	DB       *DB
	Identity *identity.Client
}

func NewGuestBinder(identity identity.Client) *GuestBinder {}
func NewGuestBinderMock() *GuestBinder                     {}

type TokenBinder struct {
	Get         func() error
	Update      func() error
	Insert      func() error
	UpdateBatch func(tx *sqlx.Tx) error
	DB          *DB
}

func NewTokenBinder(identity identity.Client) *GuestBinder {}
func NewTokenBinderMock() *GuestBinder                     {}

// The you would dependency inject the binders into the processor.
// These can act as processors which can coordinate and utilize private methods accross the different binders
// i.e. CreateGuest would create a guest, token, and ledger entry etc...
type GuestProcessor struct {
	Create func() error {}
	ActivateGuest func() error {}
	guest *GuestBinder
	token *TokenBinder
	identity *identity.Client
}